Add DownloadItem media type for downloadable files

[bazzuser]

Add DownloadItem media type for downloadable files

Type	Feature
Priority	Medium
Component	Media / Rendering
Status	new
Owner	enno
Milestone	Sprint 3
StoryID	S14
Estimate	1h

Description

To support cases where reference material (e.g. PDFs, data sheets, or documents) should be downloaded or opened externally, a new media type DownloadItem will be introduced.

This class renders a simple HTML <a> element linking to the file. It avoids embedding and instead offers a flexible, user-friendly way to access additional resources in a standalone exam environment.

Implementation

• Add DownloadItem(MediaItem) class
• Constructor accepts src and optional label
• render_html() outputs:

  <a href="{src}" download>{label}</a>
  

Acceptance Criteria

• Questions can include DownloadItem in their media list
• Link renders correctly in the browser
• Works offline (file included in exam package)
• No changes required in Jinja2 template
• Respects polymorphic rendering pattern (render_html())

Notes

• The label defaults to "Datei herunterladen" if not specified
• Advanced behavior (e.g. target="_blank") can be added later
• Keeps template logic clean and extensible

[enno]

feature added

[bazzuser]

source:flexograder/builder/media_items.py@10c45a5#L43